package com.jayqqaa12.abase.util.io;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipException;
import java.util.zip.ZipFile;
import java.util.zip.ZipOutputStream;

import android.util.Log;

/**
 * Java utils 实现的Zip工具
 * 
 */
public class ZipUtils
{
	private static final int BUFF_SIZE = 1024 * 1024; // 1M Byte

	/**
	 * 批量压缩文件（夹）
	 * 
	 * @param resFileList
	 *            要压缩的文件（夹）列表
	 * @param zipFile
	 *            生成的压缩文件
	 * @throws IOException
	 *             当压缩过程出错时抛出
	 */
	public static void zipFiles(Collection<File> resFileList, File zipFile) throws IOException
	{
		ZipOutputStream zipout = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(zipFile), BUFF_SIZE));
		for (File resFile : resFileList)
		{
			zipFile(resFile, zipout, "");
		}
		zipout.close();
	}

	/**
	 * 批量压缩文件（夹）
	 * 
	 * @param resFileList
	 *            要压缩的文件（夹）列表
	 * @param zipFile
	 *            生成的压缩文件
	 * @param comment
	 *            压缩文件的注释
	 * @throws IOException
	 *             当压缩过程出错时抛出
	 */
	public static void zipFiles(Collection<File> resFileList, File zipFile, String comment) throws IOException
	{
		ZipOutputStream zipout = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(zipFile), BUFF_SIZE));
		for (File resFile : resFileList)
		{
			zipFile(resFile, zipout, "");
		}
		zipout.setComment(comment);
		zipout.close();
	}

	/**
	 * 解压缩一个文件
	 * 
	 * @param zipFilePath
	 *            压缩文件
	 * @param toDirPath
	 *            解压缩的目标目录
	 * @throws IOException
	 *             当解压缩过程出错时抛出
	 * @throws FileNotFindException
	 *             文件找不到时 抛出
	 */

	public static void upZipFile(String zipFilePath, String toDirPath) throws ZipException, IOException,FileNotFoundException
	{
		//  目录 是否存在
		File toDir = new File(toDirPath);
		if (!toDir.exists())
		{
			toDir.mkdirs();
		}


		File zipFile = new File(zipFilePath);

		if (!zipFile.exists())
		{
			throw new FileNotFoundException();
		}
		ZipFile zf = new ZipFile(zipFile);
		
		
		for (Enumeration<?> entries = zf.entries(); entries.hasMoreElements();)
		{
			ZipEntry entry = ((ZipEntry) entries.nextElement());
			
			// 如果是 文件夹 不处理
			String name = entry.getName();
			if (name.endsWith(File.separator))
				continue;
			
			Log.i("File","file name is ="+ name);

			InputStream in = zf.getInputStream(entry);
			
			String des = toDirPath + File.separator + entry.getName();
			
			des = new String(des.getBytes("8859_1"), "GB2312");
			File desFile = new File(des);
			if (!desFile.exists())
			{
				File fileParentDir = desFile.getParentFile();
				if (!fileParentDir.exists())
				{
					fileParentDir.mkdirs();
				}
				desFile.createNewFile();
			}
			OutputStream out = new FileOutputStream(desFile);
			byte buffer[] = new byte[BUFF_SIZE];
			int realLength;
			while ((realLength = in.read(buffer)) > 0)
			{
				out.write(buffer, 0, realLength);
			}
			in.close();
			out.close();
		}
	}

	/**
	 * 解压文件名包含传入文字的文件
	 * 
	 * @param zipFile
	 *            压缩文件
	 * @param folderPath
	 *            目标文件夹
	 * @param nameContains
	 *            传入的文件匹配名
	 * @throws ZipException
	 *             压缩格式有误时抛出
	 * @throws IOException
	 *             IO错误时抛出
	 */
	public static ArrayList<File> upZipSelectedFile(File zipFile, String folderPath, String nameContains) throws ZipException, IOException
	{
		ArrayList<File> fileList = new ArrayList<File>();

		File desDir = new File(folderPath);
		if (!desDir.exists())
		{
			desDir.mkdir();
		}

		ZipFile zf = new ZipFile(zipFile);
		for (Enumeration<?> entries = zf.entries(); entries.hasMoreElements();)
		{
			ZipEntry entry = ((ZipEntry) entries.nextElement());
			if (entry.getName().contains(nameContains))
			{
				InputStream in = zf.getInputStream(entry);
				String str = folderPath + File.separator + entry.getName();
				str = new String(str.getBytes("8859_1"), "GB2312");
				// str.getBytes("GB2312"),"8859_1" 输出
				// str.getBytes("8859_1"),"GB2312" 输入
				File desFile = new File(str);
				if (!desFile.exists())
				{
					File fileParentDir = desFile.getParentFile();
					if (!fileParentDir.exists())
					{
						fileParentDir.mkdirs();
					}
					desFile.createNewFile();
				}
				OutputStream out = new FileOutputStream(desFile);
				byte buffer[] = new byte[BUFF_SIZE];
				int realLength;
				while ((realLength = in.read(buffer)) > 0)
				{
					out.write(buffer, 0, realLength);
				}
				in.close();
				out.close();
				fileList.add(desFile);
			}
		}
		return fileList;
	}

	/**
	 * 获得压缩文件内文件列表
	 * 
	 * @param zipFile
	 *            压缩文件
	 * @return 压缩文件内文件名称
	 * @throws ZipException
	 *             压缩文件格式有误时抛出
	 * @throws IOException
	 *             当解压缩过程出错时抛出
	 */
	public static ArrayList<String> getEntriesNames(File zipFile) throws ZipException, IOException
	{
		ArrayList<String> entryNames = new ArrayList<String>();
		Enumeration<?> entries = getEntriesEnumeration(zipFile);
		while (entries.hasMoreElements())
		{
			ZipEntry entry = ((ZipEntry) entries.nextElement());
			entryNames.add(new String(getEntryName(entry).getBytes("GB2312"), "8859_1"));
		}
		return entryNames;
	}

	/**
	 * 获得压缩文件内压缩文件对象以取得其属性
	 * 
	 * @param zipFile
	 *            压缩文件
	 * @return 返回一个压缩文件列表
	 * @throws ZipException
	 *             压缩文件格式有误时抛出
	 * @throws IOException
	 *             IO操作有误时抛出
	 */
	public static Enumeration<?> getEntriesEnumeration(File zipFile) throws ZipException, IOException
	{
		ZipFile zf = new ZipFile(zipFile);
		return zf.entries();

	}

	/**
	 * 取得压缩文件对象的注释
	 * 
	 * @param entry
	 *            压缩文件对象
	 * @return 压缩文件对象的注释
	 * @throws UnsupportedEncodingException
	 */
	public static String getEntryComment(ZipEntry entry) throws UnsupportedEncodingException
	{
		return new String(entry.getComment().getBytes("GB2312"), "8859_1");
	}

	/**
	 * 取得压缩文件对象的名称
	 * 
	 * @param entry
	 *            压缩文件对象
	 * @return 压缩文件对象的名称
	 * @throws UnsupportedEncodingException
	 */
	public static String getEntryName(ZipEntry entry) throws UnsupportedEncodingException
	{
		return new String(entry.getName().getBytes("GB2312"), "8859_1");
	}

	/**
	 * 压缩文件
	 * 
	 * @param resFile
	 *            需要压缩的文件（夹）
	 * @param zipout
	 *            压缩的目的文件
	 * @param rootpath
	 *            压缩的文件路径
	 * @throws FileNotFoundException
	 *             找不到文件时抛出
	 * @throws IOException
	 *             当压缩过程出错时抛出
	 */
	private static void zipFile(File resFile, ZipOutputStream zipout, String rootpath) throws FileNotFoundException, IOException
	{
		rootpath = rootpath + (rootpath.trim().length() == 0 ? "" : File.separator) + resFile.getName();
		rootpath = new String(rootpath.getBytes("8859_1"), "GB2312");
		if (resFile.isDirectory())
		{
			File[] fileList = resFile.listFiles();
			for (File file : fileList)
			{
				zipFile(file, zipout, rootpath);
			}
		}
		else
		{
			byte buffer[] = new byte[BUFF_SIZE];
			BufferedInputStream in = new BufferedInputStream(new FileInputStream(resFile), BUFF_SIZE);
			zipout.putNextEntry(new ZipEntry(rootpath));
			int realLength;
			while ((realLength = in.read(buffer)) != -1)
			{
				zipout.write(buffer, 0, realLength);
			}
			in.close();
			zipout.flush();
			zipout.closeEntry();
		}
	}
}
